Sarnia Ltd. is a manufacturing company that produces a single product. The company keeps meticulous records of manufacturing activities from which the following information has been extracted: Number of units produced Cost of goods manufactured Work in process inventory, beginning Work in process inventory, ending Direct materials cost per unit Direct labour cost per unit Manufacturing overhead cost, total March-Low 6, 200 $201,600 $ 27,000 $ 45,000 $ 6 $ 10 ? June-High 9,300 $327,000 $ 96,000 $ 63,000 6 10 ? The company's manufacturing overhead cost consists of both variable and fixed cost elements. To have data available for planning, management wants to determine how much of the overhead cost varies with the number of units produced versus how much is fixed per month. Required: 1. For both March and June, estimate the amount of manufacturing overhead cost added to production. Manufacturing overhead cost for March Manufacturing overhead cost for June 2. Using the high-low method, estimate a cost formula for manufacturing overhead. 3. If 7,200 units are produced during a month, what would be the cost of goods manufactured? Assume that work in process inventories do not change. Cost of goods manufactured